A transmitting device for communicating via a multimedia communication link includes a compression circuitry that receives blanking period data corresponding to blanking states of video blanking periods. The compression circuitry compresses the blanking period data into compressed blanking period data. The transmitting device also includes an interface that transmits signals corresponding to the compressed blanking period data via one or more multimedia channels of the multimedia communication link.

A transmitting device for communicating via a multimedia communication link includes a compression circuitry that receives blanking period data corresponding to blanking states of video blanking periods. The compression circuitry compresses the blanking period data into compressed blanking period data. The transmitting device also includes an interface that transmits signals corresponding to the compressed blanking period data via one or more multimedia channels of the multimedia communication link.

A circuit for demodulating an input signal is described. The circuit may be configured to demodulate signals modulated with amplitude-based modulation schemes, such as amplitude shift keying (ASK). The demodulator may comprise a clock extractor configured to generate a clock signal in response to receiving an amplitude-modulated input signal, a phase shifter configured to generate a sampling signal by phase-shifting the clock signal by approximately /2, and a sampler configured to sample the input signal in correspondence to one or more edges (such as one or more falling edges) of the sampling signal. In this way, the amplitude-modulated input signal may be sampled at its peak, or at least near its peak, thus ensuring high signal fidelity.

A circuit for demodulating an input signal is described. The circuit may be configured to demodulate signals modulated with amplitude-based modulation schemes, such as amplitude shift keying (ASK). The demodulator may comprise a clock extractor configured to generate a clock signal in response to receiving an amplitude-modulated input signal, a phase shifter configured to generate a sampling signal by phase-shifting the clock signal by approximately /2, and a sampler configured to sample the input signal in correspondence to one or more edges (such as one or more falling edges) of the sampling signal. In this way, the amplitude-modulated input signal may be sampled at its peak, or at least near its peak, thus ensuring high signal fidelity.

The present technology relates to a signal processing apparatus, a signal processing method, a program, and a signal transmission system realizing an SDI (serial digital interface) capable of effectively transmitting an audio stream together with video data, for example, of which the frame rate is 100 Hz or 120 Hz. An audio multiplexing unit multiplexes an audio sample into a data area of horizontal lines of n2 (here, 2n2n1) rows after a first horizontal line in which the audio sample is generated, which is a predetermined data area arranged within a horizontal blanking area disposed for each horizontal line of video data in a data stream defined in a format of an SDI used for transmitting the video data, in a case where an audio is sampled at an interval of once or less for horizontal lines of n1 (here, n12) rows of the video data of a predetermined frame rate. For example, the present technology can be applied to a broadcast camera.

The present technology relates to a signal processing apparatus, a signal processing method, a program, and a signal transmission system realizing an SDI (serial digital interface) capable of effectively transmitting an audio stream together with video data, for example, of which the frame rate is 100 Hz or 120 Hz. An audio multiplexing unit multiplexes an audio sample into a data area of horizontal lines of n2 (here, 2n2n1) rows after a first horizontal line in which the audio sample is generated, which is a predetermined data area arranged within a horizontal blanking area disposed for each horizontal line of video data in a data stream defined in a format of an SDI used for transmitting the video data, in a case where an audio is sampled at an interval of once or less for horizontal lines of n1 (here, n12) rows of the video data of a predetermined frame rate. For example, the present technology can be applied to a broadcast camera.

A transmitting device for communicating via a multimedia communication link includes a compression circuitry that receives blanking period data corresponding to blanking states of video blanking periods. The compression circuitry compresses the blanking period data into compressed blanking period data. The transmitting device also includes an interface that transmits signals corresponding to the compressed blanking period data via one or more multimedia channels of the multimedia communication link.

The present technology relates to a signal processing apparatus, a signal processing method, a program, and a signal transmission system realizing an SDI (serial digital interface) capable of effectively transmitting an audio stream together with video data, for example, of which the frame rate is 100 Hz or 120 Hz. An audio multiplexing unit multiplexes an audio sample into a data area of horizontal lines of n2 (here, 2n2n1) rows after a first horizontal line in which the audio sample is generated, which is a predetermined data area arranged within a horizontal blanking area disposed for each horizontal line of video data in a data stream defined in a format of an SDI used for transmitting the video data, in a case where an audio is sampled at an interval of once or less for horizontal lines of n1 (here, n12) rows of the video data of a predetermined frame rate. For example, the present technology can be applied to a broadcast camera.

The present technology relates to a signal processing apparatus, a signal processing method, a program, and a signal transmission system realizing an SDI (serial digital interface) capable of effectively transmitting an audio stream together with video data, for example, of which the frame rate is 100 Hz or 120 Hz. An audio multiplexing unit multiplexes an audio sample into a data area of horizontal lines of n2 (here, 2n2n1) rows after a first horizontal line in which the audio sample is generated, which is a predetermined data area arranged within a horizontal blanking area disposed for each horizontal line of video data in a data stream defined in a format of an SDI used for transmitting the video data, in a case where an audio is sampled at an interval of once or less for horizontal lines of n1 (here, n12) rows of the video data of a predetermined frame rate. For example, the present technology can be applied to a broadcast camera.

A unified system of programming communication. The system encompasses the prior art (television, radio, broadcast hardcopy, computer communications, etc.) and new user specific mass media. Within the unified system, parallel processing computer systems, each having an input (e.g., 77) controlling a plurality of computers (e.g., 205), generate and output user information at receiver stations. Under broadcast control, local computers (73, 205), combine user information selectively into prior art communications to exhibit personalized mass media programming at video monitors (202), speakers (263), printers (221), etc. At intermediate transmission stations (e.g., cable television stations), signals in network broadcasts and from local inputs (74, 77, 97, 98) cause control processors (71) and computers (73) to selectively automate connection and operation of receivers (53), recorder/players (76), computers (73), generators (82), strippers (81), etc. At receiver stations, signals in received transmissions and from local inputs (225, 218, 22) cause control processors (200) and computers (205) to automate connection and operation of converters (201), tuners (215), decryptors (224), recorder/players (217), computers (205), furnaces (206), etc. Processors (71, 200) meter and monitor availability and usage of programming.